146 H. C. FALL. 



9. E. lacustris n. sp. — Nearly similar in form, but a little larger than the 

 average mollis, and also a trifle more slender; color piceous brown, the suture in- 

 definitely paler. Head aud prothorax closely conspicuously granulate; elytral 

 punctuation nearly as in mollis; pubescence short, fine and rather sparse. Eyes 

 in the male large, the width of front less than twice their vertical diameter; evi- 

 dently smaller in the female, the front a little wider than twice their vertical 

 diameter; frontal suture more strongly impressed than in mollis. Antennae a 

 little longer than half the body in the male; third joint a little longer than the 

 fourth or fifth, the latter two nearly equal and together nearly as long as 6-8; 

 seventh just visihly longer than the sixth or eighth ; ninth very elongate, fili- 

 form, a little longer than the five preceding in the male, a little shorter in the 

 female. Prothorax rather less strongly transverse than in mollis, front angles 

 rounded, hind angles undefined. Length 4.8-5.5 mm. 



Michigan, Marquette and Aud Arbor (Hubbard and Schwarz) ; 

 Dakota (Ulke collection). 



10. E. fissuratus n. sp. — Moderately elongate, brown, head and prothorax 

 granulate-punctate. Joints 2-5 of antennae subequal, 2 and 5 being just visibly 

 longer than 3 or 4 ; 6 8 short. 7 evidently longer than 6 or 8, the latter two about 

 as wide as long in the male, but a little elongate in the female ; 9 nearly equal to 

 the six preceding in the male or four p receding in the female. Prothorax less 

 than twice as wide as long, front angles distinct, hind angles rounded but some- 

 what defined. Length 5.1-5.2 mm. 



Williams, Arizona. Two examples taken by Barber and Schwarz. 

 This species resembles both gracilis and montanus, but seems clearly 

 distinct. From the former it differs in its less transverse prothorax 

 and differently proportioned antennal joints ; from montanus it may 

 be separated by its larger size, granulate head and thorax, smaller 

 eves, different proportions of joints 2-5 of antennae, and less broadly 

 rounded hind angles of prothorax. The sixth ventral segment in 

 fissuratus is deeply cleft in the male, the fissure about one third as 

 long as the fifth ventral, and in the female it is deeply triangularly 

 emarginate, the emargination as deep as wide. In montanus the 

 sixth ventral segment is broadly emarginate, the emargination 

 much wider than deep and nearly the same in both sexes. 



11. E. nigrans n. sp. — Rather slender, black, legs and antennae slightly or 

 distinctly paler; pubescence fine, sparse, dusky in color and quite inconspicuous. 

 Head and prothorax closely granulate, elytra sparsely punctate at apex, the 

 punctures becoming stronger, closer and somewhat asperate at base. Eyes mod- 

 erate, their vertical diameter barely equal to half the width of the front in the 

 male, and evidently less in the female. Joint 3 of antennae but slightly if any 

 longer than 2, but much narrower; 4 and 5 a little shorter than 3 and mutually 

 nearlv equal ; 6. 7 and 8 shorter, each nearly or quite as wide as long, 7 a trifle 

 longer than 6 or 8 ; 9 nearly equal to the six preceding in the male. In the 

 female, joints 2-5 are subequal, 6 and 7 a little shorter and but slightly longer 



